Salesforce Developer

Immersum; Greater London; Hybrid; GBP 70,000 - 95,000; Full time

Job summary

Immersum is partnering with a rapidly growing Fintech in FX and payments, seeking a hands-on Salesforce Engineer to join an autonomous team in London. The role focuses on building Lightning Web Components, REST/SOAP integrations, Apex, and data modelling, taking ownership from design through to production.

You'll work with engineers and business stakeholders in a fast-paced regulated environment, balancing speed with quality, security and auditability, while shaping the evolving Salesforce

Qualifications

• Strong Lightning Web Components experience with lifecycle hooks and reactive properties.
• Proven Salesforce integrations using REST/SOAP and data mapping.
• Solid Apex development including governor limits and unit testing.
• Experience taking features from design through production.
• Strong design skills for scalable, maintainable codebase.
• Practical Salesforce Flow experience and judicious use of Flow vs Apex.
• Experience with Git, PRs and Salesforce deployments using SFDX.
• Excellent communication with non-technical stakeholders.
• Ownership mentality and accountability for outcomes.
• Curiosity to understand underlying problems.

Responsibilities

• Design and develop custom Salesforce solutions in a greenfield environment.
• Build Lightning Web Components and API integrations.
• Own features from refinement to testing, deployment and production.
• Contribute to code reviews and testing standards.
• Collaborate with engineers and business stakeholders to translate requirements.
• Ensure security, auditability, and data handling in a regulated environment.

Skills

Lightning Web Components

Git & PRs

Communication with stakeholders

Ownership mindset

Curiosity

Tools

Apex

SOQL

REST API

SOAP API

Salesforce CLI (SFDX)

Job description

Location: London, hybrid (2-3 days per week in office)

Immersum are partnering with a rapidly growing Fintech business operating in the FX and payments space who are looking for a Salesforce Engineer to join an autonomous engineering team.

The Company

This global Fintech business is transforming how businesses and financial institutions move money internationally. Operating across FX, payments and banking infrastructure, they are building a high-volume platform where reliability, scalability and correctness are critical.

The engineering environment is fast-paced and highly autonomous, with short paths between making a decision and getting it into production. Engineers are trusted to take ownership of the problems they are solving, work closely with the business and deliver solutions that have a direct impact on how the company operates.

The Role

You'll be a hands-on Salesforce Engineer, designing, building and shipping custom solutions across a modern, greenfield Salesforce environment. A big part of the role will be building Lightning Web Components and API integrations, alongside Apex, Flow and Salesforce data modelling. You'll own your work from refinement and design through to testing, deployment and production, with genuine input into how the platform is built as it scales.

You'll work closely with engineers and business stakeholders to understand the problem behind a requirement and turn it into a robust, scalable solution. They're looking for someone who brings curiosity and urgency - someone who asks questions, challenges the obvious solution and takes responsibility for getting things finished and into production.

You'll also contribute to code reviews, testing standards, architecture and the continued evolution of the Salesforce codebase. As the platform is relatively new, you'll have a genuine opportunity to shape the engineering standards rather than inherit years of technical debt.

The environment is regulated, so you'll need to balance speed with quality, auditability, security and careful handling of data.

Technology

• Apex / SOQL
• REST / SOAP API integrations
• Platform Events
• Jest

What they're looking for

• Strong Lightning Web Components experience, including lifecycle hooks, reactive properties, wire adapters, events and component composition
• Strong experience building Salesforce integrations using REST/SOAP, authentication, named credentials and data mapping
• Solid Apex development skills, including SOQL, governor limits, asynchronous processing and unit testing
• Experience taking features or projects from design through to production
• Strong design and implementation skills, with the ability to make decisions that keep a growing codebase scalable and maintainable
• Practical Salesforce Flow experience and good judgement around when logic belongs in Flow versus Apex
• Experience with Git, pull requests and source-driven Salesforce deployments using SFDX / Salesforce CLI
• Strong communication skills and confidence working directly with non-technical stakeholders
• A genuine ownership mentality - someone who takes responsibility for outcomes rather than simply completing assigned tasks
• Curiosity to understand the underlying